Pipe-puller



J. T. SIMMONS. PIPE PULLER.

APPLICATION FILED APR-9, 1918.

1,340,676. Patented y 18, 1920.

Fig 1- UNITED STATES PATENT OFFICE.

JOHN'T. SIMMONS, 0F BROWNWOOD, TEXAS, ASSIGNOR OF ONE-HALE TO HUGHES TOOL COMPANY, OF HOUSTON, TEXAS, A CORPORATION OF TEXAS.

PIPE-FULLER.

To all whom it may concern Be it known that I, JOHN T. SIMMoNs, a citizen of the United States, residing at Brownwood, in the county of Brown and State of Texas, have invented certain new and useful Improvements in Pipe-Pullers, of which the following is a specification.

This invention relates to new and useful improvements in a pipe puller.

The object of the invention is to provide a device of the character described which is especially designed for pulling or lifting pipe from a well bore, particularly when the same has become stuck in salid bore. In drilling wells by the rotary process, a drill stem is employed which is driven by a rotary, and the lower end of which carries a drill bit or other boring tool. In the process of drilling, particularly deep drilling, strata of varying densities are encountered, and often times the bit becomes stuck so that it is very difficult to pull the pipe by means of a direct pull, and with the instrumentalities now in common use. This device has been provided for the purpose of pulling the drill stem when the same has become stuck in the bore, as explained, and is driven by the rotary and so constructed that it will exert a direct upward pull of the drill stem until the same has become loosened, and the. said stem may be then with- 1 drawn from the bore by means of the ordinary elevator, now in common use, and other instrumentalities provided for the purpose.

Another object of the invention resides in the provision of a simple mechanism which may be readily applied to and operated by any well known type of rotary, now in common use.

With the above and other objects in view, the invention has particular relation to certain novel, features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawlngs, wherein Figure 1, is a side elevation of the device, partially in section,

Specification of Letters Patent.

Patented May 18, 1920.

Application filed April 9, 1918,. Serial No. 227,453.

drawings wherein like numeralsof reference designate similar parts in each of the figures, the numeral 1, refers to a rotary base plate whereon'the table 2, is rotatably mounted, said table being provided with an annular rim 3, whose underside has beveled gear teeth 4, in mesh with the beveled pinion 5, which is fixed upon the drive shaft 6, and through which the rotary table is driven. The rotary table carries a pipe gripping device which is fixed thereon, and which ineludes the grip rings 7, 7, arranged in oppositely disposed pairs, said grip rings being provided primarily for the purpose of gripping and rotating the drill stem 8. The construction hereinbefore described is common to the well known forms of rotary now 1n use. v

In drilling should the drill stem, for any reason, become stuck in the bore, the device hereinafter described is applied thereto, and is operated by the rotary to lift or pull said stem, said device includes an externally threaded hollow pipe section 9, adapted to fit over the upper end of the stem 8, and to passthrough the central opening of the rotary table. The upper end of the pipe section 9, is formed into an annular head 10, the opening through which is enlarged to receive the wedge-shaped slips 11, which are formed to fit within said head, and grip the stem 8, and these slips are provided with internal teeth which engage with the stem and prevent the same from turning relative to said slips. Threaded upon the pipe section 9, is means adapted to be engaged and turned by the rotary table, and which, as it rotates, moves said section lengthwise up or down, dependingupon the direction of the rotation of the table. This means is preferably a square nut 12, which is threaded onto the pipe section 9, and which is engaged with and rotated by the grip ring 7. Secured to the head 10, is a tong 13, 7

whose outer end is bifurcated forming the fingers 1 1, which embrace the standard 15. This standard is fixed to and upstands from the base plate 1, and as the rotary turns to lift the stem, the tong 13 and the fingers 1 1, operate to prevent the pipe section 9 from turning.

Should the drill stem, for any reason, hecome stuck in the bore, the device hereinbefore described, is applied to the rotary, as

explained and the rotary is driven forwardly, rotating the nut 12. Inasmuch as the pipe section 9 is held by the tong 13, against rotation, the rotation 01 the nut 12, will exert a direct upward pull on the pipe section 9, and through it on the drill stem 8, thus pulling said stem upwardly in the bore. When the stem has been pulled a sufficient distance to loosen it, it may be then withdrawn from the bore in the usual manner.

The threaded section 9 is usually not more than six or eight feet in length, and when it has been forced upwardly by the nut 12, as far as it will go, if the stem 8 is still stuck so that it cannot be withdrawn by elevators in the usual manner, or in case it is desired for any reason to further elevate the stem by means of the puller, herein described, the stem is held by a device located underneath the platform, and the rotation of the nut 12 reversed, thus running the section 9 down for another pull. \Vhile the section is being run down, the slips 11 are removed and replaced when it is desired to again grip the stem for another upward pull. For the purpose of holding the stem in position, while the section 9 being reversely rotated and run back down, 1 have provided a supportingframe 16, located under the rotary frame. Upon this frame 16, a head 17, similar to the head 10, is mounted, provided with slips 18, similar to the slips 11, which engage with and hold the stem in its elevated position,.while the section is disengaged from the stem and lowered, preparatory to another upward pull as above explained.

The device hereinbetore described-is of simple construction and may be readily and quickly applied to the drill. stem and rotary, and easily removed therefrom and is particularly convenient for use inasmuch as it may be readily applied to and operated by any well known type of rotary such as is now in common use in rotary drilling.

What I claim is 1. A pipe puller comprising an outwardly threaded sleeve through which the pipe to be pulled extends, removable slips, inserted between the sleeve and pipe and which operate to engage the sleeve with the pipe when the sleeve is elevated, means for limiting the movement of said slips in one direction, a rotatable nut on said sleeve, a rotary through which the nut is turned, and a standard upstanding from the rotary for holding the sleeve against rotation while the nut is being rotated.

2. A pipe puller comprising an outwardly threaded sleeve through which the pipe to he pulled extends, the upper end of said sleeve being flared, removable slips, inserted in said flared end, and between the sleeve and pipe, and which operate to engage the sleeve with the pipe when the sleeve is elevated, but which release the pipe when the sleeve is lowered, a nut threaded on the sleeve, a rotary through which said nut is turned, and a means connected to the sleeve and holding the same against rotation.

3. A pipe puller including an outwardly threaded sleeve, through which the pipe to be pulled extends, the upper end of the sleeve being flared forming a recess, removable slips inserted in said recess, between the sleeve and pipe, and which operate to connect the sleeve to the pipe, when the sleeve is elevated, a rotatable nut threaded onto the sleeve, a rotary through which the nut is turned, a fixed standard and tongs engaging withthe sleeve, and having a slidable connection with the standard, which permit the vertical movement of the sleeve, but hold it against rotation.

4:. A pipe puller including an outwardly threaded sleeve, through which the pipe to be pulled extends, means which engage the pipe, and operate to connect the sleeve .to the pipe, when the said sleeve is elevated, but which release the pipe when the sleeve is lowered, a rotatable nut threaded on the sleeve, a rotary operatively connected to said nut through which the same is turned, a fixed standard and means connected to the sleeve and held against rotation by said standard, said means holding the sleeve against rotation when the nut is turned.

5. A pipe puller including an outwardly threaded sleeve through which the pipe to be pulled extends, means adaptedto engage the pipe and which operate to connect the sleeve to the pipe when the sleeve is elevated, but which release the pipe when the sleeve is lowered, a rotatable nut threaded onto the sleeve, a rotary operatively connectedto said nut, through which the same is turned, means connected to the sleeve and movable therewith, as the sleeve is elevated and lowered, and a mechanism engaging with said last mentioned means, and holding the same against rotation but permitting said means to move up and down as the sleeve is elevated and lowered.

6. A pipe puller including an outwardly threaded sleeve, through which the pipe to be pulled extends, means adapted to engage with the pipe which operate to connect the sleeve to the pipe when the sleeve is elevated but which release the pipe when the sleeve is lowered, means which engage with the pipe to hold it elevated, when the sleeve is released therefrom, a rotatable nut threaded onto the sleeve, a rotary operatively connected to said nut through which the same is turned, to elevate or lower the sleeve, a means connected to the sleeve and a device 10 connected to said last mentioned means through which the sleeve is held against rotation when the nut is turned.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN T. SIMMONS. 

